The Citizen CT-S851III is a high-speed 80 mm thermal receipt printer with a splash-proof front paper exit – ideal for restaurants, bars and kitchens, or for installation under a counter. It prints sharp 203 dpi receipts at up to 500 mm/s, cuts them automatically and shows status, errors and your own messages on its programmable LCD panel. This version, CTS851IIIS3NEBPXX, is black with built-in USB and a free slot for an optional serial, Ethernet, Wi-Fi or Bluetooth interface board; the power supply is built in and a power cord with an EU (Schuko) plug is included – a USB cable is not.
📦 What's in the box – CTS851IIIS3NEBPXX
- ✅ Citizen CT-S851III printer – black, USB 2.0 (Type-B) + free interface slot
- ✅ Power supply – built into the printer (Citizen 37AD3, detachable, ENERGY STAR) – no external power brick
- ✅ Power cord – EU plug (Schuko)
- ❌ USB cable – NOT included
- ❌ Optional interface board – NOT included – only needed for serial, parallel, Ethernet, Wi-Fi or Bluetooth – fits the free interface slot
- ✅ Starter paper roll – 80 mm thermal paper to get you started
- ✅ Setup guide – drivers, utilities and manuals are a free download from Citizen
⚠️ Please note: no interface cable is included. The printer cannot be connected to your computer or POS system without one – please order a USB cable separately: the Bixolon USB-KAB-G USB cable (USB A to B) fits, as does any standard USB 2.0 A-to-B printer cable.
💡 Useful extras: 80 mm thermal paper rolls (Zebra Z-Perform 1000D 60 (3013286) or Citizen 3623200); an interface board for the free slot – Citizen TZ66801-0 (serial RS-232), Citizen PPS00585S (Ethernet) or Citizen PPZ60108S (Wi-Fi). The drawer kick-out port (24 V) can open up to two standard cash drawers automatically with every sale.
Key Features
- Ultra-fast 500 mm/s printing – sharp 203 dpi receipts, logos and barcodes in an instant keep queues short, even at peak times.
- Splash-proof front exit – receipts come out at the front and the design protects the printer against spills and foreign objects, so it can sit under a shelf or counter top; easy drop-in loading of rolls up to 83 mm in diameter.
- Programmable LCD panel – shows printer status, errors and help messages in plain text, plus your own logo or scrolling messages such as low-paper warnings or reorder instructions.
- USB + free interface slot – built-in USB 2.0 plus one slot for an optional interface board: serial RS-232, parallel, Ethernet, Ethernet + USB host, Wi-Fi, Bluetooth (Apple MFi) or Powered USB.
- Built-in power supply – no external power brick under the counter: just plug in the supplied power cord (ENERGY STAR compliant).
- Guillotine auto-cutter – full or partial cut, rated for 2 million cuts; print head life 150 km.
- Variable paper width – 58, 60, 80 or 83 mm rolls, set with the paper partition and a memory switch.
- Two cash drawers and buzzer – the drawer kick-out port drives up to two 24 V cash drawers; the built-in buzzer signals errors and completed jobs.
- Tool-free maintenance – paper jams and cutter locks are cleared in seconds without tools, keeping downtime to a minimum.
- ESC/POS compatible – backwards compatible with previous CT-S models; drivers for Windows, Linux (CUPS), iOS and Android plus OPOS and JavaPOS; works with most POS software, including Loyverse.
Ideal Applications
- Restaurants, bars, cafés and quick-service kitchens – receipts and kitchen order tickets
- Hotels and hospitality counters
- Under-counter installation where space is tight
- Kiosks and self-service terminals
- Busy retail checkouts with high receipt volumes
All CT-S801III / CT-S851III Versions
The highlighted row is the version you are currently viewing.
| Part Number | Model | Paper Exit | Interfaces | Power Cord | |
|---|---|---|---|---|---|
| CTS801IIIS3NEBPXX | CT-S801III | Top | USB + I/F slot | EU (Schuko) | View product |
| CTS851IIIS3NEBPXX (this version) | CT-S851III | Front | USB + I/F slot | EU (Schuko) | Viewing |
Technical Specifications
| Part Number | CTS851IIIS3NEBPXX |
|---|---|
| Model | Citizen CT-S851III (built-in power supply type) |
| Printer Type | POS thermal receipt printer (single-station, front exit, splash-proof) |
| Print Method | Direct thermal line printing |
| Resolution | 203 × 203 dpi (8 dots/mm) |
| Print Speed | Max. 500 mm/s |
| Paper Width | Max. print width 80 mm (640 dots); paper width 58, 60, 80 or 83 mm (set with the paper partition + memory switch) |
| Characters per Line | 80 mm: 48 (Font A) / 64 (Font B) / 72 (Font C); 58 mm: 35 / 46 / 52; 60 mm: 36 / 48 / 54; 83 mm: 53 / 71 / 80 |
| Roll Diameter | Max. 83 mm (core 12 mm inner / 18 mm outer diameter) |
| Paper Thickness | 65–75 µm or 75–85 µm |
| Auto-cutter | Yes – guillotine auto-cutter, full and partial cut; life 2,000,000 cuts |
| Interfaces | USB 2.0 Full-Speed (Type-B), built in; free interface slot for one optional board: serial RS-232C, parallel IEEE 1284, Ethernet, Ethernet + USB host, Wi-Fi, Bluetooth (Apple MFi), Powered USB or USB with hub |
| Wireless | Optional – Wi-Fi or Bluetooth (Apple MFi) interface board, sold separately |
| Drawer Kick-out | Yes – drawer kick-out port, up to 2 cash drawers, 24 V DC |
| Emulation / Command Set | ESC/POS (backwards compatible with previous CT-S models) |
| Fonts / Character Sets | Font A 12 × 24, Font B 9 × 24, Font C 8 × 16 dots; code pages PC437, 850, 852, 857, 858, 860, 863, 864, 865, 866, WPC1252, Katakana, Thai code 18 |
| Barcodes | 1D: UPC-A, UPC-E, EAN-13, EAN-8, Code 39, Code 93, Code 128, Codabar; 2D: PDF417, QR Code |
| Drivers & Software | Windows 7/10/11, Windows Server 2022, Linux (CUPS), iOS, Android; OPOS, JavaPOS; free download from Citizen |
| Mobile Printing | Mobile-POS ready – print from iOS and Android devices via an optional Bluetooth (Apple MFi), Ethernet or Wi-Fi interface board |
| Data Buffer | 4 KB or 45 bytes (selectable) |
| Display | Programmable LCD operating panel – status, errors, help messages, logos and scrolling messages |
| Sensors | Paper end, paper near-end (adjustable) |
| Power Supply | Built-in Citizen 37AD3 power supply (internal, detachable, ENERGY STAR): AC 100–240 V, 50/60 Hz in, 24 V DC / 2.1 A out – power cord with EU plug included |
| Power Consumption | Approx. 60 W printing, 1 W standby, 0.3 W power off |
| Dimensions (W × D × H) | 145 × 192 × 142 mm |
| Weight | Approx. 1.9 kg |
| Color | Black |
| Installation | Horizontal (desktop or under a counter) – front paper exit, drop-in paper loading |
| Operating Temperature | 5 °C to 45 °C |
| Storage Temperature | −20 °C to 60 °C |
| Humidity | 10–90% RH, non-condensing |
| Reliability | Auto-cutter: 2,000,000 cuts |
| Print Head Life | 150 km / 200 million pulses |
| Certifications | CE, TÜV, UL, cUL, FCC Class A; ENERGY STAR |
| Warranty | 24 months (including print head and cutter) |
| In the Box | Citizen CT-S851III printer (USB, front paper exit, black) with built-in power supply (Citizen 37AD3), AC power cord with EU (Schuko) plug, starter paper roll, quick start guide – USB cable and optional interface board NOT included (order separately) |
Which model should you choose? The CT-S801III (CTS801IIIS3NEBPXX) has a top paper exit – the classic choice for retail checkouts. The CT-S851III (CTS851IIIS3NEBPXX) has a splash-proof front exit for hospitality, kitchens and under-counter installation. Otherwise both are the same: 500 mm/s, 203 dpi, LCD panel, USB plus a free interface slot, built-in power supply and an EU (Schuko) power cord; the USB cable and any optional interface board are ordered separately. Compare other models in our POS Receipt Printers collection or contact our team for volume pricing.
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